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THE EFFECTS OF WHOLE BODY VIBRATION EXERCISE ON METABOLIC SYSTEMS IN OVERWEIGHT LATINO BOYS
by
David Ned James Erceg
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(BIOKINESIOLOGY)
August 2011
Copyright 2011 David Ned James Erceg
Object Description
| Title | The effects of whole body vibration exercise on metabolic systems in overweight Latino boys |
| Author | Erceg, David Ned James |
| Author email | erceg@usc.edu;erceg@hotmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Biokinesiology |
| School | School of Dentistry |
| Date defended/completed | 2011-05-25 |
| Date submitted | 2011-07-31 |
| Date approved | 2011-08-01 |
| Restricted until | 2011-08-01 |
| Date published | 2011-08-01 |
| Advisor (committee chair) |
Schroeder, E. Todd Salem, George |
| Advisor (committee member) |
Azen, Stanley Hawkins, Steve Rice, Judd |
| Abstract | With an increasing childhood obesity epidemic, efficient methods of exercise are sought to improve health. Vibration training has been in use for decades to improve strength and flexibility, however little is known about the metabolic effects from whole body vibration (WBV) exercise. We sought to determine if WBV exercise can improve insulin/glucose dynamics, lipid profile, body composition, leg strength and power in sedentary overweight Latino boys. Twenty overweight prepubertal Latino boys 8-10 years of age were randomly assigned to either a control (CON = 9, 9.1±0.9 yr, 57.8±18.5 kg) or 3 days per week WBV exercise (VIB = 11, 9.0±0.9 yr, 45.7±7.8 kg) for 10 weeks. Assessments were performed at baseline and 48 hours post last training session to avoid any confounding acute effects of exercise. Glucose/insulin indices were determined through an oral glucose tolerance test. Body composition was assessed using dual-energy x-ray absorptiometry. Physical performance was assessed using a Keiser leg press machine for strength and the Bassey Leg-extension Rig for power. Comparisons of changes within and between groups for variables of interest were conducted using t tests and general linear model (p<0.05). Interestingly, there was a significant decrease in fasting glucose (p=0.04), triglycerides (p=0.02), and VLDL cholesterol (p=0.02), while leg press (p<0.05) and power (p<0.05) increased for the CON group. Significant increases in total lean mass (p<0.05), bone mineral density (p<0.05), leg press (p<0.05) and power (p<0.05) were observed for the VIB group when compared to baseline values. Between groups analyses revealed the CON group significantly lowered VLDL cholesterol (p=0.02) and triglycerides (p=0.02) compared to the WBV exercise group. The VIB group significantly increased total lean mass (p<0.01) compared to the CON group. These data suggest a controlled 10 wk WBV exercise program may not be effective for altering fasting insulin and glucose, insulin resistance, or lipids in prepubertal Latino boys. However a 10-week intervention may alter body composition in overweight boys primarily by increasing total lean mass. |
| Keyword | vibration; insulin resistance; bone |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Rights | Erceg, David Ned James |
| Access conditions | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@usc.edu |
| Archival file | uscthesesreloadpub_Volume71/etd-ErcegDavid-219.pdf |
Description
| Title | Page 1 |
| Full text | THE EFFECTS OF WHOLE BODY VIBRATION EXERCISE ON METABOLIC SYSTEMS IN OVERWEIGHT LATINO BOYS by David Ned James Erceg A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (BIOKINESIOLOGY) August 2011 Copyright 2011 David Ned James Erceg |
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